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Discussion Starter #21
Only five months late responding ...
After this mod, the headlight failure indicator light will never come on.
The high beam indicator will always come on when the toggle switch is high, even if the high filament is burned out.
 

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I tried looking at the video but it keeps saying error and won't show.
 

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I did this mod a long time ago. If my headlight burns out at night (and I rarely ride at night) I know to immediately switch to the other beam. I also have a toggle switch installed on the high beam, so that I can turn the headlight off and have enough power to use my electric gloves.
 

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So if the headlight won’t turn on, nor does the warning come on, would that be a bad RLU? Would bypassing it be a way to troubleshoot it?


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Discussion Starter #26
A bad RLU could definitely cause a dead headlight with no warning light. If you bypassed it and got the headlight back it would 100% diagnose the problem as a bad RLU.
 

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Thanks. I’ll give it a shot. I checked the filament and fuse, with no luck.

All other lights act as they should, indicator and brake lights. No warning light on the cluster, but the other lights work. Edit - okay, the blue wire mod worked, but only with the bike started.

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Discussion Starter #28
Looks like your problem isn't the RLU, and you've got some other stuff going on with the blue wire mod not behaving right. Mind starting a new thread if you need more assistance and we'll sort it out there?
 

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You got it


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I made a video on how to do this. This worked for me, and it may not be the BEST way to jump wires, but hell, it works. Thanks Thorn for the thread. Hopefully this will help others who are visual learners (like myself!)

Hi Mike I watched your video on removing the RLU one question I have . I noticed that when you turned on your ignition the headlight came on. I thought that the headlight when starting the bike stays off and when the bike starts the headlight comes on . Your headlight stayed on with ignition to on not yet started the engine on the bike. Did you do another mod On your head light wiring ?
 

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Hi Mike I watched your video on removing the RLU one question I have . I noticed that when you turned on your ignition the headlight came on. I thought that the headlight when starting the bike stays off and when the bike starts the headlight comes on . Your headlight stayed on with ignition to on not yet started the engine on the bike. Did you do another mod On your head light wiring ?
It's the Blue Wire mod, look for the pinned post in the electrical section.

It's easy to do.
 

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Thanks spockster

I figured that was what was done . I only would consider doing this mod if the internal relay went bad . I am not sure what other benefit I would get by doing the blue wire mod. I kind of prefer the headlight stay off while i am starting the motor. Is the only reason to do the blue wire mod is because of the relay going bad . Is there some other benefit to doing it

I bought a shorai lithium battery for my bike but the regular size battery did not have enough cold cranking power . I exchanged it for the 18 battery size . I had to install battery side ways so it would fit I got the battery with positive post on the left so when battery installed the positive wire was easy to reach . I did have to extend the ground wire to reach the negative post. Now the bike starts right up I have been using this same battery for six years . It never fails .
 
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